Portable cleaning machine



FIG. 1 is a right perspective view of a portable cleaning machineshowing our new design;

FIG. 2 is a left perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is an enlarged top view thereof.

The details shown in broken lines form no part of the claimed design.

The ornamental design for a portable cleaning machine, as shown anddescribed.